Messages in this thread | | | Date | Mon, 21 Sep 2015 10:38:46 -0400 (EDT) | From | Alan Stern <> | Subject | Re: [RFC PATCH] PM / Runtime: runtime: Add sysfs option for forcing runtime suspend |
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On Mon, 21 Sep 2015, Pavel Machek wrote:
> > > In fact, then, what you need seems to be the feature discussed by Alan > > > and me some time ago allowing remote wakeup do be disabled for runtime > > > PM from user space as that in combination with autosuspend should > > > address your use case. > > > > That, plus they want the touchscreen to go into runtime suspend > > whenever the screen is off (was this not the main reason for the > > patch?). > > > > It seems to me that it should be possible to arrange for this to happen > > simply by making userspace close the touchscreen device when the screen > > is turned off. Or am I missing something? > > Well... that's not what existing userspace expects. Your X windows > server will not close the touchscreen.
Surely that's a userspace issue, rather than a kernel problem? The X server does have some notion of power management and power savings; why not extend that notion to include touchscreens?
> ..and it would be nice to have enough hardware abstraction in the > kernel so that X can be used on phones...
What -- not Wayland?! :-)
Alan Stern
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